"I have made this hundreds of times. Since making it the first time, I have tweaked it. I do still use the ketchup with seasonings for the meat. I don't think it needs any added flavor by using a taco seasoning packet. And my husband is really big on flavor and spice so I know that it's ok when he doesn't complain. I add an entire bottle of taco sauce to the mayo. I did not think that a quarter bottle was enough. I also add twice the cheese. Other than that, I really like it the same."